objspace_dump.c: include object's gc flags in dump

* ext/objspace/objspace_dump.c (dump_object): include fstring flag on
  strings. include gc flags (old, remembered, wb_protected) on all objects.
* ext/objspace/objspace_dump.c (Init_objspace_dump): initialize lazy
  IDs before first use.
* gc.c (rb_obj_gc_flags): new function to retrieve object flags
* internal.h (RB_OBJ_GC_FLAGS_MAX): maximum flags allowed for one obj
* test/objspace/test_objspace.rb (test_dump_flags): test for above
* test/objspace/test_objspace.rb (test_trace_object_allocations):
  resolve name before dump (for rb_class_path_cached)

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44105 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 7 insertions, 0 deletions

diff --git a/test/objspace/test_objspace.rb b/test/objspace/test_objspace.rb
index 38fd9bd46f..42dc55de9f 100644
--- a/test/objspace/test_objspace.rb
+++ b/test/objspace/test_objspace.rb
@@ -130,6 +130,7 @@ class TestObjSpace < Test::Unit::TestCase
   end
 
   def test_trace_object_allocations
+    Class.name
     o0 = Object.new
     ObjectSpace.trace_object_allocations{
       o1 = Object.new; line1 = __LINE__; c1 = GC.count
@@ -193,6 +194,12 @@ class TestObjSpace < Test::Unit::TestCase
     assert_equal(nil, ObjectSpace.allocation_sourcefile(obj3))
   end
 
+  def test_dump_flags
+    info = ObjectSpace.dump("foo".freeze)
+    assert_match /"wb_protected":true, "old":true, "marked":true/, info
+    assert_match /"fstring":true/, info
+  end
+
   def test_dump_to_default
     line = nil
     info = nil